Transient Tachypnea of Newborn

Etiology: Delayed pulmonary fluid resorption due to lack of a vaginal squeeze in infants born via caesarean section or precipitous vaginal delivery
Imaging CXR:
— Normal lung volumes and prominent fine interstitial markings with or without pleural effusion which resolves in 1-2 days
— Initially it is radiographically indistinguishable from Group B Streptococcus pneumonia
DDX: Initially radiographically indistinguishable from Group B Streptococcus pneumonia which does not resolve within 24-48 hours
Complications:
Treatment: None
Clinical:

Radiology Cases of Transient Tachypnea of Newborn

CXR of transient tachypnea of the newborn — Initial CXR AP (above) shows normal lung expansion and fine interstitial infiltrates bilaterally. No pleural effusion is seen. CXR AP taken 1 day later (below) shows interval complete resolution of the previously seen fine interstitial infiltrates.

CXR of transient tachypnea of the newborn — CXR AP on the first day of life (left) shows normal lung volumes with prominent interstitial infiltrates bilaterally in the lungs and a small right pleural effusion with fluid in the minor fissure of the right lung. CXR AP on the second day of life (right) shows interval resolution of the interstitial infiltrates with a small amount of pleural effusion remaining in the minor fissure of the right lung.

CXR of transient tachypnea of the newborn — CXR AP on the first day of life (left) shows normal lung volumes with prominent interstitial infiltrates bilaterally in the lungs. CXR AP on the second day of life (right) shows interval resolution of the interstitial infiltrates.

CXR of transient tachypnea of the newborn — CXR on day 1 (above) shows normal lung volumes and fine interstitial infiltrates which have resolved on the CXR from day 2 (below).